How to put 2 video side by side and create chunks of given duration?

Question

I want to combine 2 commands

1. Merge a webcam capture and a desktop capture side-by-side:

   ffmpeg -f v4l2 -framerate 25 -video_size 640x480 -i /dev/video0 \
   -f x11grab -framerate 100 -video_size 1600x900 -i :0.0 \
   -filter_complex "[0:v]pad=iw:900:0:(oh-ih)/2[left];[left][1:v]hstack" \
   output.avi
   

2. Create chunks of a duration from 1 video:

   ffmpeg -f video4linux2 -s vga -i /dev/video0 -f segment -segment_time 1 -strftime 1 '%Y-%m-%d_%H-%M-%S.ts'
   

What is the proper way of merging those 2 commands in order to have at the end chunks of a video comprised of those 2 videos?

Answer 1

Just combine them:

ffmpeg -f v4l2 -framerate 25 -video_size 640x480 -i /dev/video0 \
-f x11grab -framerate 100 -video_size 1600x900 -i :0.0 \
-filter_complex "[0:v]pad=iw:900:0:(oh-ih)/2[left];[left][1:v]hstack,format=yuv420p" \
-c:v libx264 -f segment -segment_time 1 -strftime 1 '%Y-%m-%d_%H-%M-%S.ts'